package com.maven.zh.util;

import java.security.MessageDigest;

public class MD5Util {

	 public static String digest16(String inStr) {  
	    	return digest(inStr, 16);
		}
	    public static String digest(String inStr) {  
	    	return digest(inStr, 32);
		}  
	    private static String digest(String inStr, int rang) {  
		    MessageDigest md5 = null;  
		    if ( StringUtil.isEmpty(inStr) ) {
		    	return "";
		    }
		  
		    try {
		        md5 = MessageDigest.getInstance("MD5");  
		    } catch (Exception e) {  
		        e.printStackTrace();  
		        return "";  
		    }
		    
		    char[] charArray = inStr.toCharArray();  
		    byte[] byteArray = new byte[charArray.length];  
		  
		    for (int i = 0; i < charArray.length; i++) {
		    	byteArray[i] = (byte) charArray[i];	
		    }
		    
		    byte[] md5Bytes = md5.digest(byteArray);  
		    
		    StringBuilder hexValue = new StringBuilder();  
		    // StringBuffer
		  
		    for (int i = 0; i < md5Bytes.length; i++) {  
		        int val = ((int) md5Bytes[i]) & 0xff;  
		        if (val < 16)  
		            hexValue.append("0");  
		        hexValue.append(Integer.toHexString(val));  
		    }  
		    if ( rang == 32 ) {
		    	return hexValue.toString();	
		    } else {
		    	return hexValue.toString().substring(8, 24);
		    	// JS : "".substring
		    }
		} 
	    
	    public static void main(String args[]) { 
	    	
	    	// 21232f297a57a5a743894a0e4a801fc3
//	    	String ss = "0123456789aabc";
//		    String s = new String("admin");
//		    System.out.println(digest(s));
//		    
		   String s = new String("IOS@0.06.13@huanxiong");
		    System.out.println(digest(s));
		}  

	}

